S71910 CE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71910 CE/P4ADBA Bearing Product Overview & Core Advantages
The S71910 CE/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair configuration enables it to withstand combined radial and axial loads from both directions simultaneously. Manufactured to P4A tolerance class and featuring an extra light preload (Class A), it delivers superior running accuracy, high system stiffness, and optimal performance in high-speed applications, making it ideal for high-reliability precision machinery.
S71910 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| S | Stainless Steel (Ring Material specified as Chrome Steel) | High corrosion resistance |
| 71910 | Bore: 50mm, OD: 72mm, Width: 24mm | Compact bearing dimensions |
| CE | High-Grade Phenolic Resin Cage | Excellent high-speed performance, low friction |
| P4A | High Precision Tolerance Class | Superior running accuracy and dimensional stability |
| DB | Duplex Back-to-Back Arrangement | Handles moment loads, increases system rigidity |
| A | Extra Light Preload | Minimizes friction and heat generation at high speeds |
S71910 CE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back design creates a wide effective spread, significantly enhancing system stiffness and enabling the bearing to handle substantial combined loads and moment loads effectively. The 15° contact angle provides an optimal balance between radial and axial load capacity.
High-Speed Performance: The phenolic resin cage (CE) offers low mass and excellent sliding properties, contributing to the high limiting speed of 34,000 rpm. The extra light preload further reduces operational friction and heat buildup.
Precision & Durability: Manufactured to P4A precision class with tight dimensional tolerances on bore, outside diameter, and width, this bearing ensures minimal runout and vibration. The use of high-grade chrome steel for rings and balls guarantees long service life and high dynamic load ratings (4680 lbf dynamic, 3825 lbf static).
Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is maintenance-free within its specified temperature range of -30°C to 110°C.
S71910 CE/P4ADBA Bearing Typical Application Areas
This high-precision duplex angular contact ball bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Medical and Dental Equipment Drives
- Robotic Arm Joints and Precision Rotary Axes
- Aerospace Actuation Systems
